west coast estuaries is adversely affected by pol- 

 lution, omitting the area of Florida Bay because 

 it lies mainly within Everglades National Park. 

 Over one-half of the 402 point sources of pollu- 

 tion are located in Sarasota and Tampa Bays. 

 The eleven estuarine areas most affected by pol- 

 lution are the Caloosahatchee River, Sarasota 

 Bay system, Hillsborough Bay, Old Tampa Bay, 

 Boca Ciega Bay, Fenholloway River, St. Joseph 

 Bay, St. Andrew Bay, Escambia Bay, Pensacola 

 Bay, and Perdido Bay. 



16. The area of filled land in estuaries of Flor- 

 ida's west coast is 23,521 acres (9,519 ha). 

 Drainage of tidal marshes for mosquito control 

 involves 26,676 acres (10,796 ha). 



17. As might be expected a direct relation ex- 

 ists between the human population in communi- 

 ties bordering estuaries and areas closed to shell- 

 fishing, number of sources of pollution, and areas 

 of filled land (Fig. 46) . The obvious implication 

 is that the trends will continue unabated unless 

 controls are initiated. 



ACKNOWLEDGMENTS 



We acknowledge especially the help received 

 from the following individuals: Ernest A. 

 Anthony of this Laboratory's staff has assisted 

 selflessly and consistently in every possible way; 

 Philip A. Butler and Nelson R. Cooley for salinity 

 and other unpublished data on the Pensacola Bay 

 area; William B. Robertson, Jr., for his unpub- 

 lished map of coastal vegetation in Everglades 

 National Park; John H. Davis, Jr., for counsel 

 on mangroves and marshes; Olga Lakela for as- 

 sistance with the nomenclature of marsh vege- 

 tation ; Robert E. Gilmore for unpublished eco- 

 logical data on Chassahowitzka National Wildlife 

 Refuge; William K. Whitfield, Jr., and Joseph 

 Martina, Jr., for information on oyster leases and 

 the location of oyster beds in Apalachicola Bay; 

 James H. Hartwell, Aaron L. Higer, and Milton 

 C. Kolipinski for aerial photographs of Florida 

 Bay and vicinity; James E. Santarone, Vernon 

 Keys, H. L. Fincher, Harold Leadbetter, Frank 

 L. Cross, Jr., and Roy L. Parham for data on 

 pollution; and to W. Scott Davis, J. Alan Huff, 

 and Jeffrey B. Miller, work-study students at 

 the University of South Florida, for making sev- 

 eral illustrations in this publication. Many other 

 individuals have given substantial help in various 

 ways; our appreciation is very real even though 

 we have not mentioned each individual by name. 



LITERATURE CITED 



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121 



